package com.sayimo.maker.commons.utils;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import javax.imageio.ImageIO;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;

/**
 * @Project: sayimoWeixinWeb
 * @ClassName: MatrixToImageWriter
 * @Description: 二维码生成
 * @Author:	王瑞清
 * @Date:	日期：2015年8月22日  时间：下午5:06:11
 * @Version 1.0.0
 */
public class MatrixToImageWriter {
	 private static final int BLACK = 0xFF000000;
	   private static final int WHITE = 0xFFFFFFFF;
	 
	   private MatrixToImageWriter() {}
	 
	   public static BufferedImage toBufferedImage(BitMatrix matrix) {
	     int width = matrix.getWidth();
	     int height = matrix.getHeight();
	     BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
	     for (int x = 0; x < width; x++) {
	       for (int y = 0; y < height; y++) {
	         image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
	       }
	     }
	     return image;
	   }
	 
	   
	   public static void writeToFile(BitMatrix matrix, String format, File file)
	       throws IOException {
	     BufferedImage image = toBufferedImage(matrix);
	     if (!ImageIO.write(image, format, file)) {
	       throw new IOException("Could not write an image of format " + format + " to " + file);
	     }
	   }
	 
	   
	   public static void writeToStream(BitMatrix matrix, String format, OutputStream stream)
	       throws IOException {
	     BufferedImage image = toBufferedImage(matrix);
	     if (!ImageIO.write(image, format, stream)) {
	       throw new IOException("Could not write an image of format " + format);
	     }
	   }

	   public static void main(String[] args) {
		   try {
			     String content = "http://www.baidu.com";
			     String path = "C:/Users/Administrator/Desktop/testImage";
			     MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
			     Map hints = new HashMap();
			     hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
			     BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, 300, 300,hints);
			     File file1 = new File(path,"ss.jpg");
			     MatrixToImageWriter.writeToFile(bitMatrix, "jpg", file1);
			 } catch (Exception e) {
			     e.printStackTrace();
			 }
	}

}
